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The film is adapted from the novel of the same name in Agasha Christie. Poirot (David Suchet) visited Istanbul, and resolved a complex case for the British military. On the way back to London, he met Mr. Bouc, director of the old friend International Bus Company, who booked a ticket for Oriental Express for Poireot at the last moment. On the train, Poirot met the wealthy American businessman Samuel. He told Poirot that his life was threatened and was willing to pay for him to protect himself, but he was rejected by Poirot. When I woke up the next morning, Poirot found that the train was trapped in the storm and Samuel had been murdered in the box. With the assistance of Mr. Bouc and Dr. Constantine, he began investigating the murder. Can he successfully solve this confusing and shocking case?